Presentation Information
[23a-11F-8]Highly sensitive colorimetric plasmonic sensing using silver nanopillar array
〇(D)Yosuke Sugimoto1, Kotaro Kajikawa1, Mana Toma1 (1.Tokyo Tech)
Keywords:
Plasmonic colors,refractive index sensing,colorimetric detection
Plasmonic biosensors using metallic nanostructures as sensor substrates are expected to be applied to biomolecular diagnostics. However, miniaturization of the optical devices required for measurement has been a challenge. To solve this problem, we have developed a colorimetric plasmonic biosensor that can use a color camera such as that of a smartphone for measurement. It is important to fabricate metallic nanostructures for the sensor substrate uniformly and cost-effectively over an area ranging from millimeters to centimeters. We have developed a novel method to fabricate a uniform metallic nanostructure on an area of millimeter to centimeter. Therefore, we focused on moth-eye films with periodically arranged nanopillars. We have previously reported that metallic nanopillar arrays deposited on moth-eye films show plasmonic colors that depend on the metal species and metal film thickness. In this study, we aimed to evaluate the performance of a colorimetric plasmonic sensor using silver nanopillar arrays as the sensor substrate.